| Boulder to Krosno Odrzanskie | 5,140.38 mi (8,272.64 km) |
| Boulder to Krotoszyn | 5,225.49 mi (8,409.61 km) |
| Boulder to Kruszwica | 5,199.20 mi (8,367.30 km) |
| Boulder to Krynica | 5,445.16 mi (8,763.15 km) |
| Boulder to Krzeszowice | 5,369.18 mi (8,640.85 km) |
| Boulder to Kudowa-Zdroj | 5,254.73 mi (8,456.67 km) |
| Boulder to Kutno | 5,250.98 mi (8,450.63 km) |
| Boulder to Kwidzyn | 5,160.52 mi (8,305.06 km) |
| Boulder to Lancut | 5,445.48 mi (8,763.65 km) |
| Boulder to Lapy | 5,304.51 mi (8,536.78 km) |
| Boulder to Lask | 5,278.28 mi (8,494.57 km) |
| Boulder to Laziska Gorne | 5,345.88 mi (8,603.36 km) |
| Boulder to Lebork | 5,086.72 mi (8,186.29 km) |
| Boulder to Leczna | 5,396.02 mi (8,684.06 km) |
| Boulder to Leczyca | 5,256.01 mi (8,458.72 km) |
